/* Professional Black Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #0a0a0a;
    border-top: 1px solid rgba(255,255,255,0.05);
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    max-width: 900px;
    margin: 0 auto;
    height: 68px;
    z-index: 100;
    padding: 0 8px;
}
.bottom-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    color: #6b7280;
    text-decoration: none;
    font-size: 8px;
    font-weight: 500;
    letter-spacing: 0.3px;
    transition: all 0.2s;
    padding: 6px 0;
    position: relative;
}
.bottom-nav .nav-item svg {
    width: 22px;
    height: 22px;
    stroke: #6b7280;
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.bottom-nav .nav-item.active { color: #ffffff; }
.bottom-nav .nav-item.active svg { stroke: #818cf8; }
.bottom-nav .nav-item.active::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2.5px;
    background: #818cf8;
    border-radius: 0 0 3px 3px;
}
.bottom-nav .nav-item span { font-size: 8px; font-weight: 500; text-transform: uppercase; color: #6b7280; }
.bottom-nav .nav-item.active span { color: #ffffff; }
@media (max-width: 600px) {
    .bottom-nav { height: 60px; }
    .bottom-nav .nav-item svg { width: 18px; height: 18px; }
    .bottom-nav .nav-item span { font-size: 7px; }
}